2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 #include "xfs_types.h"
24 #include "xfs_trans.h"
29 #include "xfs_dmapi.h"
30 #include "xfs_mount.h"
31 #include "xfs_da_btree.h"
32 #include "xfs_bmap_btree.h"
33 #include "xfs_ialloc_btree.h"
34 #include "xfs_alloc_btree.h"
35 #include "xfs_dir_sf.h"
36 #include "xfs_dir2_sf.h"
37 #include "xfs_attr_sf.h"
38 #include "xfs_dinode.h"
39 #include "xfs_inode.h"
40 #include "xfs_inode_item.h"
41 #include "xfs_btree.h"
42 #include "xfs_alloc.h"
43 #include "xfs_ialloc.h"
44 #include "xfs_quota.h"
45 #include "xfs_error.h"
48 #include "xfs_refcache.h"
49 #include "xfs_buf_item.h"
50 #include "xfs_log_priv.h"
51 #include "xfs_dir2_trace.h"
52 #include "xfs_extfree_item.h"
56 #include "xfs_fsops.h"
58 STATIC int xfs_sync(bhv_desc_t *, int, cred_t *);
63 extern kmem_zone_t *xfs_bmap_free_item_zone;
64 extern kmem_zone_t *xfs_btree_cur_zone;
65 extern kmem_zone_t *xfs_trans_zone;
66 extern kmem_zone_t *xfs_buf_item_zone;
67 extern kmem_zone_t *xfs_dabuf_zone;
68 #ifdef XFS_DABUF_DEBUG
69 extern lock_t xfs_dabuf_global_lock;
70 spinlock_init(&xfs_dabuf_global_lock, "xfsda");
74 * Initialize all of the zone allocators we use.
76 xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t),
77 "xfs_bmap_free_item");
78 xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t),
80 xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans");
82 kmem_zone_init(sizeof(xfs_da_state_t), "xfs_da_state");
83 xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf");
84 xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork");
85 xfs_acl_zone_init(xfs_acl_zone, "xfs_acl");
88 * The size of the zone allocated buf log item is the maximum
89 * size possible under XFS. This wastes a little bit of memory,
90 * but it is much faster.
93 kmem_zone_init((sizeof(xfs_buf_log_item_t) +
94 (((XFS_MAX_BLOCKSIZE / XFS_BLI_CHUNK) /
95 NBWORD) * sizeof(int))),
98 kmem_zone_init((sizeof(xfs_efd_log_item_t) +
99 ((XFS_EFD_MAX_FAST_EXTENTS - 1) *
100 sizeof(xfs_extent_t))),
103 kmem_zone_init((sizeof(xfs_efi_log_item_t) +
104 ((XFS_EFI_MAX_FAST_EXTENTS - 1) *
105 sizeof(xfs_extent_t))),
109 * These zones warrant special memory allocator hints
112 kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode",
113 KM_ZONE_HWALIGN | KM_ZONE_RECLAIM |
114 KM_ZONE_SPREAD, NULL);
116 kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili",
117 KM_ZONE_SPREAD, NULL);
119 kmem_zone_init_flags(sizeof(xfs_chashlist_t), "xfs_chashlist",
120 KM_ZONE_SPREAD, NULL);
123 * Allocate global trace buffers.
125 #ifdef XFS_ALLOC_TRACE
126 xfs_alloc_trace_buf = ktrace_alloc(XFS_ALLOC_TRACE_SIZE, KM_SLEEP);
128 #ifdef XFS_BMAP_TRACE
129 xfs_bmap_trace_buf = ktrace_alloc(XFS_BMAP_TRACE_SIZE, KM_SLEEP);
131 #ifdef XFS_BMBT_TRACE
132 xfs_bmbt_trace_buf = ktrace_alloc(XFS_BMBT_TRACE_SIZE, KM_SLEEP);
135 xfs_dir_trace_buf = ktrace_alloc(XFS_DIR_TRACE_SIZE, KM_SLEEP);
137 #ifdef XFS_ATTR_TRACE
138 xfs_attr_trace_buf = ktrace_alloc(XFS_ATTR_TRACE_SIZE, KM_SLEEP);
140 #ifdef XFS_DIR2_TRACE
141 xfs_dir2_trace_buf = ktrace_alloc(XFS_DIR2_GTRACE_SIZE, KM_SLEEP);
146 #if (defined(DEBUG) || defined(INDUCE_IO_ERROR))
147 xfs_error_test_init();
148 #endif /* DEBUG || INDUCE_IO_ERROR */
151 xfs_sysctl_register();
158 extern kmem_zone_t *xfs_bmap_free_item_zone;
159 extern kmem_zone_t *xfs_btree_cur_zone;
160 extern kmem_zone_t *xfs_inode_zone;
161 extern kmem_zone_t *xfs_trans_zone;
162 extern kmem_zone_t *xfs_da_state_zone;
163 extern kmem_zone_t *xfs_dabuf_zone;
164 extern kmem_zone_t *xfs_efd_zone;
165 extern kmem_zone_t *xfs_efi_zone;
166 extern kmem_zone_t *xfs_buf_item_zone;
167 extern kmem_zone_t *xfs_chashlist_zone;
169 xfs_cleanup_procfs();
170 xfs_sysctl_unregister();
171 xfs_refcache_destroy();
172 xfs_acl_zone_destroy(xfs_acl_zone);
174 #ifdef XFS_DIR2_TRACE
175 ktrace_free(xfs_dir2_trace_buf);
177 #ifdef XFS_ATTR_TRACE
178 ktrace_free(xfs_attr_trace_buf);
181 ktrace_free(xfs_dir_trace_buf);
183 #ifdef XFS_BMBT_TRACE
184 ktrace_free(xfs_bmbt_trace_buf);
186 #ifdef XFS_BMAP_TRACE
187 ktrace_free(xfs_bmap_trace_buf);
189 #ifdef XFS_ALLOC_TRACE
190 ktrace_free(xfs_alloc_trace_buf);
193 kmem_zone_destroy(xfs_bmap_free_item_zone);
194 kmem_zone_destroy(xfs_btree_cur_zone);
195 kmem_zone_destroy(xfs_inode_zone);
196 kmem_zone_destroy(xfs_trans_zone);
197 kmem_zone_destroy(xfs_da_state_zone);
198 kmem_zone_destroy(xfs_dabuf_zone);
199 kmem_zone_destroy(xfs_buf_item_zone);
200 kmem_zone_destroy(xfs_efd_zone);
201 kmem_zone_destroy(xfs_efi_zone);
202 kmem_zone_destroy(xfs_ifork_zone);
203 kmem_zone_destroy(xfs_ili_zone);
204 kmem_zone_destroy(xfs_chashlist_zone);
210 * This function fills in xfs_mount_t fields based on mount args.
211 * Note: the superblock has _not_ yet been read in.
216 struct xfs_mount_args *ap,
217 struct xfs_mount *mp)
219 /* Values are in BBs */
220 if ((ap->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) {
222 * At this point the superblock has not been read
223 * in, therefore we do not know the block size.
224 * Before the mount call ends we will convert
227 mp->m_dalign = ap->sunit;
228 mp->m_swidth = ap->swidth;
231 if (ap->logbufs != -1 &&
233 (ap->logbufs < XLOG_MIN_ICLOGS ||
234 ap->logbufs > XLOG_MAX_ICLOGS)) {
236 "XFS: invalid logbufs value: %d [not %d-%d]",
237 ap->logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS);
238 return XFS_ERROR(EINVAL);
240 mp->m_logbufs = ap->logbufs;
241 if (ap->logbufsize != -1 &&
242 ap->logbufsize != 0 &&
243 ap->logbufsize != 16 * 1024 &&
244 ap->logbufsize != 32 * 1024 &&
245 ap->logbufsize != 64 * 1024 &&
246 ap->logbufsize != 128 * 1024 &&
247 ap->logbufsize != 256 * 1024) {
249 "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
251 return XFS_ERROR(EINVAL);
253 mp->m_ihsize = ap->ihashsize;
254 mp->m_logbsize = ap->logbufsize;
255 mp->m_fsname_len = strlen(ap->fsname) + 1;
256 mp->m_fsname = kmem_alloc(mp->m_fsname_len, KM_SLEEP);
257 strcpy(mp->m_fsname, ap->fsname);
259 mp->m_rtname = kmem_alloc(strlen(ap->rtname) + 1, KM_SLEEP);
260 strcpy(mp->m_rtname, ap->rtname);
262 if (ap->logname[0]) {
263 mp->m_logname = kmem_alloc(strlen(ap->logname) + 1, KM_SLEEP);
264 strcpy(mp->m_logname, ap->logname);
267 if (ap->flags & XFSMNT_WSYNC)
268 mp->m_flags |= XFS_MOUNT_WSYNC;
270 if (ap->flags & XFSMNT_INO64) {
271 mp->m_flags |= XFS_MOUNT_INO64;
272 mp->m_inoadd = XFS_INO64_OFFSET;
275 if (ap->flags & XFSMNT_RETERR)
276 mp->m_flags |= XFS_MOUNT_RETERR;
277 if (ap->flags & XFSMNT_NOALIGN)
278 mp->m_flags |= XFS_MOUNT_NOALIGN;
279 if (ap->flags & XFSMNT_SWALLOC)
280 mp->m_flags |= XFS_MOUNT_SWALLOC;
281 if (ap->flags & XFSMNT_OSYNCISOSYNC)
282 mp->m_flags |= XFS_MOUNT_OSYNCISOSYNC;
283 if (ap->flags & XFSMNT_32BITINODES)
284 mp->m_flags |= XFS_MOUNT_32BITINODES;
286 if (ap->flags & XFSMNT_IOSIZE) {
287 if (ap->iosizelog > XFS_MAX_IO_LOG ||
288 ap->iosizelog < XFS_MIN_IO_LOG) {
290 "XFS: invalid log iosize: %d [not %d-%d]",
291 ap->iosizelog, XFS_MIN_IO_LOG,
293 return XFS_ERROR(EINVAL);
296 mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE;
297 mp->m_readio_log = mp->m_writeio_log = ap->iosizelog;
300 if (ap->flags & XFSMNT_IHASHSIZE)
301 mp->m_flags |= XFS_MOUNT_IHASHSIZE;
302 if (ap->flags & XFSMNT_IDELETE)
303 mp->m_flags |= XFS_MOUNT_IDELETE;
304 if (ap->flags & XFSMNT_DIRSYNC)
305 mp->m_flags |= XFS_MOUNT_DIRSYNC;
306 if (ap->flags & XFSMNT_ATTR2)
307 mp->m_flags |= XFS_MOUNT_ATTR2;
309 if (ap->flags2 & XFSMNT2_COMPAT_IOSIZE)
310 mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
313 * no recovery flag requires a read-only mount
315 if (ap->flags & XFSMNT_NORECOVERY) {
316 if (!(vfs->vfs_flag & VFS_RDONLY)) {
318 "XFS: tried to mount a FS read-write without recovery!");
319 return XFS_ERROR(EINVAL);
321 mp->m_flags |= XFS_MOUNT_NORECOVERY;
324 if (ap->flags & XFSMNT_NOUUID)
325 mp->m_flags |= XFS_MOUNT_NOUUID;
326 if (ap->flags & XFSMNT_BARRIER)
327 mp->m_flags |= XFS_MOUNT_BARRIER;
329 mp->m_flags &= ~XFS_MOUNT_BARRIER;
335 * This function fills in xfs_mount_t fields based on mount args.
336 * Note: the superblock _has_ now been read in.
341 struct xfs_mount_args *ap,
342 struct xfs_mount *mp)
344 int ronly = (vfs->vfs_flag & VFS_RDONLY);
346 /* Fail a mount where the logbuf is smaller then the log stripe */
347 if (XFS_SB_VERSION_HASLOGV2(&mp->m_sb)) {
348 if ((ap->logbufsize <= 0) &&
349 (mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE)) {
350 mp->m_logbsize = mp->m_sb.sb_logsunit;
351 } else if (ap->logbufsize > 0 &&
352 ap->logbufsize < mp->m_sb.sb_logsunit) {
354 "XFS: logbuf size must be greater than or equal to log stripe size");
355 return XFS_ERROR(EINVAL);
358 /* Fail a mount if the logbuf is larger than 32K */
359 if (ap->logbufsize > XLOG_BIG_RECORD_BSIZE) {
361 "XFS: logbuf size for version 1 logs must be 16K or 32K");
362 return XFS_ERROR(EINVAL);
366 if (XFS_SB_VERSION_HASATTR2(&mp->m_sb)) {
367 mp->m_flags |= XFS_MOUNT_ATTR2;
371 * prohibit r/w mounts of read-only filesystems
373 if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) {
375 "XFS: cannot mount a read-only filesystem as read-write");
376 return XFS_ERROR(EROFS);
380 * check for shared mount.
382 if (ap->flags & XFSMNT_SHARED) {
383 if (!XFS_SB_VERSION_HASSHARED(&mp->m_sb))
384 return XFS_ERROR(EINVAL);
387 * For IRIX 6.5, shared mounts must have the shared
388 * version bit set, have the persistent readonly
389 * field set, must be version 0 and can only be mounted
392 if (!ronly || !(mp->m_sb.sb_flags & XFS_SBF_READONLY) ||
393 (mp->m_sb.sb_shared_vn != 0))
394 return XFS_ERROR(EINVAL);
396 mp->m_flags |= XFS_MOUNT_SHARED;
399 * Shared XFS V0 can't deal with DMI. Return EINVAL.
401 if (mp->m_sb.sb_shared_vn == 0 && (ap->flags & XFSMNT_DMAPI))
402 return XFS_ERROR(EINVAL);
411 * The file system configurations are:
412 * (1) device (partition) with data and internal log
413 * (2) logical volume with data and log subvolumes.
414 * (3) logical volume with data, log, and realtime subvolumes.
416 * We only have to handle opening the log and realtime volumes here if
417 * they are present. The data subvolume has already been opened by
418 * get_sb_bdev() and is stored in vfsp->vfs_super->s_bdev.
422 struct bhv_desc *bhvp,
423 struct xfs_mount_args *args,
426 struct vfs *vfsp = bhvtovfs(bhvp);
428 struct xfs_mount *mp = XFS_BHVTOM(bhvp);
429 struct block_device *ddev, *logdev, *rtdev;
430 int flags = 0, error;
432 ddev = vfsp->vfs_super->s_bdev;
433 logdev = rtdev = NULL;
436 * Setup xfs_mount function vectors from available behaviors
438 p = vfs_bhv_lookup(vfsp, VFS_POSITION_DM);
439 mp->m_dm_ops = p ? *(xfs_dmops_t *) vfs_bhv_custom(p) : xfs_dmcore_stub;
440 p = vfs_bhv_lookup(vfsp, VFS_POSITION_QM);
441 mp->m_qm_ops = p ? *(xfs_qmops_t *) vfs_bhv_custom(p) : xfs_qmcore_stub;
442 p = vfs_bhv_lookup(vfsp, VFS_POSITION_IO);
443 mp->m_io_ops = p ? *(xfs_ioops_t *) vfs_bhv_custom(p) : xfs_iocore_xfs;
445 if (args->flags & XFSMNT_QUIET)
446 flags |= XFS_MFSI_QUIET;
449 * Open real time and log devices - order is important.
451 if (args->logname[0]) {
452 error = xfs_blkdev_get(mp, args->logname, &logdev);
456 if (args->rtname[0]) {
457 error = xfs_blkdev_get(mp, args->rtname, &rtdev);
459 xfs_blkdev_put(logdev);
463 if (rtdev == ddev || rtdev == logdev) {
465 "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev.");
466 xfs_blkdev_put(logdev);
467 xfs_blkdev_put(rtdev);
473 * Setup xfs_mount buffer target pointers
476 mp->m_ddev_targp = xfs_alloc_buftarg(ddev, 0);
477 if (!mp->m_ddev_targp) {
478 xfs_blkdev_put(logdev);
479 xfs_blkdev_put(rtdev);
483 mp->m_rtdev_targp = xfs_alloc_buftarg(rtdev, 1);
484 if (!mp->m_rtdev_targp)
487 mp->m_logdev_targp = (logdev && logdev != ddev) ?
488 xfs_alloc_buftarg(logdev, 1) : mp->m_ddev_targp;
489 if (!mp->m_logdev_targp)
493 * Setup flags based on mount(2) options and then the superblock
495 error = xfs_start_flags(vfsp, args, mp);
498 error = xfs_readsb(mp, flags);
501 error = xfs_finish_flags(vfsp, args, mp);
506 * Setup xfs_mount buffer target pointers based on superblock
508 error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize,
509 mp->m_sb.sb_sectsize);
510 if (!error && logdev && logdev != ddev) {
511 unsigned int log_sector_size = BBSIZE;
513 if (XFS_SB_VERSION_HASSECTOR(&mp->m_sb))
514 log_sector_size = mp->m_sb.sb_logsectsize;
515 error = xfs_setsize_buftarg(mp->m_logdev_targp,
516 mp->m_sb.sb_blocksize,
520 error = xfs_setsize_buftarg(mp->m_rtdev_targp,
521 mp->m_sb.sb_blocksize,
522 mp->m_sb.sb_sectsize);
526 if ((mp->m_flags & XFS_MOUNT_BARRIER) && !(vfsp->vfs_flag & VFS_RDONLY))
527 xfs_mountfs_check_barriers(mp);
529 error = XFS_IOINIT(vfsp, args, flags);
539 xfs_binval(mp->m_ddev_targp);
540 if (logdev && logdev != ddev)
541 xfs_binval(mp->m_logdev_targp);
543 xfs_binval(mp->m_rtdev_targp);
545 xfs_unmountfs_close(mp, credp);
555 struct vfs *vfsp = bhvtovfs(bdp);
556 xfs_mount_t *mp = XFS_BHVTOM(bdp);
559 int unmount_event_wanted = 0;
560 int unmount_event_flags = 0;
561 int xfs_unmountfs_needed = 0;
567 if (vfsp->vfs_flag & VFS_DMI) {
568 error = XFS_SEND_PREUNMOUNT(mp, vfsp,
569 rvp, DM_RIGHT_NULL, rvp, DM_RIGHT_NULL,
571 (mp->m_dmevmask & (1<<DM_EVENT_PREUNMOUNT))?
572 0:DM_FLAGS_UNWANTED);
574 return XFS_ERROR(error);
575 unmount_event_wanted = 1;
576 unmount_event_flags = (mp->m_dmevmask & (1<<DM_EVENT_UNMOUNT))?
577 0 : DM_FLAGS_UNWANTED;
581 * First blow any referenced inode from this file system
582 * out of the reference cache, and delete the timer.
584 xfs_refcache_purge_mp(mp);
586 XFS_bflush(mp->m_ddev_targp);
587 error = xfs_unmount_flush(mp, 0);
591 ASSERT(vn_count(rvp) == 1);
594 * Drop the reference count
599 * If we're forcing a shutdown, typically because of a media error,
600 * we want to make sure we invalidate dirty pages that belong to
601 * referenced vnodes as well.
603 if (XFS_FORCED_SHUTDOWN(mp)) {
604 error = xfs_sync(&mp->m_bhv,
605 (SYNC_WAIT | SYNC_CLOSE), credp);
606 ASSERT(error != EFSCORRUPTED);
608 xfs_unmountfs_needed = 1;
611 /* Send DMAPI event, if required.
612 * Then do xfs_unmountfs() if needed.
613 * Then return error (or zero).
615 if (unmount_event_wanted) {
616 /* Note: mp structure must still exist for
617 * XFS_SEND_UNMOUNT() call.
619 XFS_SEND_UNMOUNT(mp, vfsp, error == 0 ? rvp : NULL,
620 DM_RIGHT_NULL, 0, error, unmount_event_flags);
622 if (xfs_unmountfs_needed) {
624 * Call common unmount function to flush to disk
625 * and free the super block buffer & mount structures.
627 xfs_unmountfs(mp, credp);
630 return XFS_ERROR(error);
637 int count = 0, pincount;
639 xfs_refcache_purge_mp(mp);
640 xfs_flush_buftarg(mp->m_ddev_targp, 0);
641 xfs_finish_reclaim_all(mp, 0);
643 /* This loop must run at least twice.
644 * The first instance of the loop will flush
645 * most meta data but that will generate more
646 * meta data (typically directory updates).
647 * Which then must be flushed and logged before
648 * we can write the unmount record.
651 xfs_syncsub(mp, SYNC_REMOUNT|SYNC_ATTR|SYNC_WAIT, 0, NULL);
652 pincount = xfs_flush_buftarg(mp->m_ddev_targp, 1);
666 struct xfs_mount_args *args)
668 struct vfs *vfsp = bhvtovfs(bdp);
669 xfs_mount_t *mp = XFS_BHVTOM(bdp);
672 if (args->flags & XFSMNT_BARRIER)
673 mp->m_flags |= XFS_MOUNT_BARRIER;
675 mp->m_flags &= ~XFS_MOUNT_BARRIER;
677 if ((vfsp->vfs_flag & VFS_RDONLY) &&
678 !(*flags & MS_RDONLY)) {
679 vfsp->vfs_flag &= ~VFS_RDONLY;
681 if (args->flags & XFSMNT_BARRIER)
682 xfs_mountfs_check_barriers(mp);
685 if (!(vfsp->vfs_flag & VFS_RDONLY) &&
686 (*flags & MS_RDONLY)) {
687 VFS_SYNC(vfsp, SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR, NULL, error);
691 /* Ok now write out an unmount record */
692 xfs_log_unmount_write(mp);
693 xfs_unmountfs_writesb(mp);
694 vfsp->vfs_flag |= VFS_RDONLY;
701 * xfs_unmount_flush implements a set of flush operation on special
702 * inodes, which are needed as a separate set of operations so that
703 * they can be called as part of relocation process.
707 xfs_mount_t *mp, /* Mount structure we are getting
709 int relocation) /* Called from vfs relocation. */
711 xfs_inode_t *rip = mp->m_rootip;
713 xfs_inode_t *rsumip = NULL;
714 vnode_t *rvp = XFS_ITOV(rip);
717 xfs_ilock(rip, XFS_ILOCK_EXCL);
721 * Flush out the real time inodes.
723 if ((rbmip = mp->m_rbmip) != NULL) {
724 xfs_ilock(rbmip, XFS_ILOCK_EXCL);
726 error = xfs_iflush(rbmip, XFS_IFLUSH_SYNC);
727 xfs_iunlock(rbmip, XFS_ILOCK_EXCL);
729 if (error == EFSCORRUPTED)
732 ASSERT(vn_count(XFS_ITOV(rbmip)) == 1);
734 rsumip = mp->m_rsumip;
735 xfs_ilock(rsumip, XFS_ILOCK_EXCL);
737 error = xfs_iflush(rsumip, XFS_IFLUSH_SYNC);
738 xfs_iunlock(rsumip, XFS_ILOCK_EXCL);
740 if (error == EFSCORRUPTED)
743 ASSERT(vn_count(XFS_ITOV(rsumip)) == 1);
747 * Synchronously flush root inode to disk
749 error = xfs_iflush(rip, XFS_IFLUSH_SYNC);
750 if (error == EFSCORRUPTED)
753 if (vn_count(rvp) != 1 && !relocation) {
754 xfs_iunlock(rip, XFS_ILOCK_EXCL);
755 return XFS_ERROR(EBUSY);
759 * Release dquot that rootinode, rbmino and rsumino might be holding,
760 * flush and purge the quota inodes.
762 error = XFS_QM_UNMOUNT(mp);
763 if (error == EFSCORRUPTED)
767 VN_RELE(XFS_ITOV(rbmip));
768 VN_RELE(XFS_ITOV(rsumip));
771 xfs_iunlock(rip, XFS_ILOCK_EXCL);
778 xfs_iunlock(rip, XFS_ILOCK_EXCL);
780 return XFS_ERROR(EFSCORRUPTED);
784 * xfs_root extracts the root vnode from a vfs.
786 * vfsp -- the vfs struct for the desired file system
787 * vpp -- address of the caller's vnode pointer which should be
788 * set to the desired fs root vnode
797 vp = XFS_ITOV((XFS_BHVTOM(bdp))->m_rootip);
806 * Fill in the statvfs structure for the given file system. We use
807 * the superblock lock in the mount structure to ensure a consistent
808 * snapshot of the counters returned.
822 mp = XFS_BHVTOM(bdp);
825 statp->f_type = XFS_SB_MAGIC;
827 xfs_icsb_sync_counters_lazy(mp);
829 statp->f_bsize = sbp->sb_blocksize;
830 lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0;
831 statp->f_blocks = sbp->sb_dblocks - lsize;
832 statp->f_bfree = statp->f_bavail = sbp->sb_fdblocks;
833 fakeinos = statp->f_bfree << sbp->sb_inopblog;
835 fakeinos += mp->m_inoadd;
838 MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER);
843 statp->f_files = min_t(typeof(statp->f_files),
846 statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree);
847 XFS_SB_UNLOCK(mp, s);
849 xfs_statvfs_fsid(statp, mp);
850 statp->f_namelen = MAXNAMELEN - 1;
857 * xfs_sync flushes any pending I/O to file system vfsp.
859 * This routine is called by vfs_sync() to make sure that things make it
860 * out to disk eventually, on sync() system calls to flush out everything,
861 * and when the file system is unmounted. For the vfs_sync() case, all
862 * we really need to do is sync out the log to make all of our meta-data
863 * updates permanent (except for timestamps). For calls from pflushd(),
864 * dirty pages are kept moving by calling pdflush() on the inodes
865 * containing them. We also flush the inodes that we can lock without
866 * sleeping and the superblock if we can lock it without sleeping from
867 * vfs_sync() so that items at the tail of the log are always moving out.
870 * SYNC_BDFLUSH - We're being called from vfs_sync() so we don't want
871 * to sleep if we can help it. All we really need
872 * to do is ensure that the log is synced at least
873 * periodically. We also push the inodes and
874 * superblock if we can lock them without sleeping
875 * and they are not pinned.
876 * SYNC_ATTR - We need to flush the inodes. If SYNC_BDFLUSH is not
877 * set, then we really want to lock each inode and flush
879 * SYNC_WAIT - All the flushes that take place in this call should
881 * SYNC_DELWRI - This tells us to push dirty pages associated with
882 * inodes. SYNC_WAIT and SYNC_BDFLUSH are used to
883 * determine if they should be flushed sync, async, or
885 * SYNC_CLOSE - This flag is passed when the system is being
886 * unmounted. We should sync and invalidate everything.
887 * SYNC_FSDATA - This indicates that the caller would like to make
888 * sure the superblock is safe on disk. We can ensure
889 * this by simply making sure the log gets flushed
890 * if SYNC_BDFLUSH is set, and by actually writing it
901 xfs_mount_t *mp = XFS_BHVTOM(bdp);
903 if (unlikely(flags == SYNC_QUIESCE))
904 return xfs_quiesce_fs(mp);
906 return xfs_syncsub(mp, flags, 0, NULL);
910 * xfs sync routine for internal use
912 * This routine supports all of the flags defined for the generic VFS_SYNC
913 * interface as explained above under xfs_sync. In the interests of not
914 * changing interfaces within the 6.5 family, additional internally-
915 * required functions are specified within a separate xflags parameter,
916 * only available by calling this routine.
926 xfs_inode_t *ip = NULL;
927 xfs_inode_t *ip_next;
934 uint base_lock_flags;
935 boolean_t mount_locked;
936 boolean_t vnode_refed;
939 xfs_iptr_t *ipointer;
941 boolean_t ipointer_in = B_FALSE;
943 #define IPOINTER_SET ipointer_in = B_TRUE
944 #define IPOINTER_CLR ipointer_in = B_FALSE
951 /* Insert a marker record into the inode list after inode ip. The list
952 * must be locked when this is called. After the call the list will no
955 #define IPOINTER_INSERT(ip, mp) { \
956 ASSERT(ipointer_in == B_FALSE); \
957 ipointer->ip_mnext = ip->i_mnext; \
958 ipointer->ip_mprev = ip; \
959 ip->i_mnext = (xfs_inode_t *)ipointer; \
960 ipointer->ip_mnext->i_mprev = (xfs_inode_t *)ipointer; \
962 XFS_MOUNT_IUNLOCK(mp); \
963 mount_locked = B_FALSE; \
967 /* Remove the marker from the inode list. If the marker was the only item
968 * in the list then there are no remaining inodes and we should zero out
969 * the whole list. If we are the current head of the list then move the head
972 #define IPOINTER_REMOVE(ip, mp) { \
973 ASSERT(ipointer_in == B_TRUE); \
974 if (ipointer->ip_mnext != (xfs_inode_t *)ipointer) { \
975 ip = ipointer->ip_mnext; \
976 ip->i_mprev = ipointer->ip_mprev; \
977 ipointer->ip_mprev->i_mnext = ip; \
978 if (mp->m_inodes == (xfs_inode_t *)ipointer) { \
982 ASSERT(mp->m_inodes == (xfs_inode_t *)ipointer); \
983 mp->m_inodes = NULL; \
989 #define XFS_PREEMPT_MASK 0x7f
993 if (XFS_MTOVFS(mp)->vfs_flag & VFS_RDONLY)
999 /* Allocate a reference marker */
1000 ipointer = (xfs_iptr_t *)kmem_zalloc(sizeof(xfs_iptr_t), KM_SLEEP);
1002 fflag = XFS_B_ASYNC; /* default is don't wait */
1003 if (flags & (SYNC_BDFLUSH | SYNC_DELWRI))
1004 fflag = XFS_B_DELWRI;
1005 if (flags & SYNC_WAIT)
1006 fflag = 0; /* synchronous overrides all */
1008 base_lock_flags = XFS_ILOCK_SHARED;
1009 if (flags & (SYNC_DELWRI | SYNC_CLOSE)) {
1011 * We need the I/O lock if we're going to call any of
1012 * the flush/inval routines.
1014 base_lock_flags |= XFS_IOLOCK_SHARED;
1017 XFS_MOUNT_ILOCK(mp);
1021 mount_locked = B_TRUE;
1022 vnode_refed = B_FALSE;
1027 ASSERT(ipointer_in == B_FALSE);
1028 ASSERT(vnode_refed == B_FALSE);
1030 lock_flags = base_lock_flags;
1033 * There were no inodes in the list, just break out
1041 * We found another sync thread marker - skip it
1043 if (ip->i_mount == NULL) {
1048 vp = XFS_ITOV_NULL(ip);
1051 * If the vnode is gone then this is being torn down,
1052 * call reclaim if it is flushed, else let regular flush
1053 * code deal with it later in the loop.
1057 /* Skip ones already in reclaim */
1058 if (ip->i_flags & XFS_IRECLAIM) {
1062 if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL) == 0) {
1064 } else if ((xfs_ipincount(ip) == 0) &&
1065 xfs_iflock_nowait(ip)) {
1066 IPOINTER_INSERT(ip, mp);
1068 xfs_finish_reclaim(ip, 1,
1069 XFS_IFLUSH_DELWRI_ELSE_ASYNC);
1071 XFS_MOUNT_ILOCK(mp);
1072 mount_locked = B_TRUE;
1073 IPOINTER_REMOVE(ip, mp);
1075 xfs_iunlock(ip, XFS_ILOCK_EXCL);
1086 if (XFS_FORCED_SHUTDOWN(mp) && !(flags & SYNC_CLOSE)) {
1087 XFS_MOUNT_IUNLOCK(mp);
1088 kmem_free(ipointer, sizeof(xfs_iptr_t));
1093 * If this is just vfs_sync() or pflushd() calling
1094 * then we can skip inodes for which it looks like
1095 * there is nothing to do. Since we don't have the
1096 * inode locked this is racy, but these are periodic
1097 * calls so it doesn't matter. For the others we want
1098 * to know for sure, so we at least try to lock them.
1100 if (flags & SYNC_BDFLUSH) {
1101 if (((ip->i_itemp == NULL) ||
1102 !(ip->i_itemp->ili_format.ilf_fields &
1104 (ip->i_update_core == 0)) {
1111 * Try to lock without sleeping. We're out of order with
1112 * the inode list lock here, so if we fail we need to drop
1113 * the mount lock and try again. If we're called from
1114 * bdflush() here, then don't bother.
1116 * The inode lock here actually coordinates with the
1117 * almost spurious inode lock in xfs_ireclaim() to prevent
1118 * the vnode we handle here without a reference from
1119 * being freed while we reference it. If we lock the inode
1120 * while it's on the mount list here, then the spurious inode
1121 * lock in xfs_ireclaim() after the inode is pulled from
1122 * the mount list will sleep until we release it here.
1123 * This keeps the vnode from being freed while we reference
1126 if (xfs_ilock_nowait(ip, lock_flags) == 0) {
1127 if ((flags & SYNC_BDFLUSH) || (vp == NULL)) {
1138 IPOINTER_INSERT(ip, mp);
1139 xfs_ilock(ip, lock_flags);
1141 ASSERT(vp == XFS_ITOV(ip));
1142 ASSERT(ip->i_mount == mp);
1144 vnode_refed = B_TRUE;
1147 /* From here on in the loop we may have a marker record
1148 * in the inode list.
1151 if ((flags & SYNC_CLOSE) && (vp != NULL)) {
1153 * This is the shutdown case. We just need to
1154 * flush and invalidate all the pages associated
1155 * with the inode. Drop the inode lock since
1156 * we can't hold it across calls to the buffer
1159 * We don't set the VREMAPPING bit in the vnode
1160 * here, because we don't hold the vnode lock
1161 * exclusively. It doesn't really matter, though,
1162 * because we only come here when we're shutting
1165 xfs_iunlock(ip, XFS_ILOCK_SHARED);
1167 if (XFS_FORCED_SHUTDOWN(mp)) {
1168 VOP_TOSS_PAGES(vp, 0, -1, FI_REMAPF);
1170 VOP_FLUSHINVAL_PAGES(vp, 0, -1, FI_REMAPF);
1173 xfs_ilock(ip, XFS_ILOCK_SHARED);
1175 } else if ((flags & SYNC_DELWRI) && (vp != NULL)) {
1177 /* We need to have dropped the lock here,
1178 * so insert a marker if we have not already
1182 IPOINTER_INSERT(ip, mp);
1186 * Drop the inode lock since we can't hold it
1187 * across calls to the buffer cache.
1189 xfs_iunlock(ip, XFS_ILOCK_SHARED);
1190 VOP_FLUSH_PAGES(vp, (xfs_off_t)0, -1,
1191 fflag, FI_NONE, error);
1192 xfs_ilock(ip, XFS_ILOCK_SHARED);
1197 if (flags & SYNC_BDFLUSH) {
1198 if ((flags & SYNC_ATTR) &&
1199 ((ip->i_update_core) ||
1200 ((ip->i_itemp != NULL) &&
1201 (ip->i_itemp->ili_format.ilf_fields != 0)))) {
1203 /* Insert marker and drop lock if not already
1207 IPOINTER_INSERT(ip, mp);
1211 * We don't want the periodic flushing of the
1212 * inodes by vfs_sync() to interfere with
1213 * I/O to the file, especially read I/O
1214 * where it is only the access time stamp
1215 * that is being flushed out. To prevent
1216 * long periods where we have both inode
1217 * locks held shared here while reading the
1218 * inode's buffer in from disk, we drop the
1219 * inode lock while reading in the inode
1220 * buffer. We have to release the buffer
1221 * and reacquire the inode lock so that they
1222 * are acquired in the proper order (inode
1223 * locks first). The buffer will go at the
1224 * end of the lru chain, though, so we can
1225 * expect it to still be there when we go
1226 * for it again in xfs_iflush().
1228 if ((xfs_ipincount(ip) == 0) &&
1229 xfs_iflock_nowait(ip)) {
1232 xfs_iunlock(ip, XFS_ILOCK_SHARED);
1234 error = xfs_itobp(mp, NULL, ip,
1239 /* Bailing out, remove the
1240 * marker and free it.
1242 XFS_MOUNT_ILOCK(mp);
1244 IPOINTER_REMOVE(ip, mp);
1246 XFS_MOUNT_IUNLOCK(mp);
1248 ASSERT(!(lock_flags &
1249 XFS_IOLOCK_SHARED));
1252 sizeof(xfs_iptr_t));
1257 * Since we dropped the inode lock,
1258 * the inode may have been reclaimed.
1259 * Therefore, we reacquire the mount
1260 * lock and check to see if we were the
1261 * inode reclaimed. If this happened
1262 * then the ipointer marker will no
1263 * longer point back at us. In this
1264 * case, move ip along to the inode
1265 * after the marker, remove the marker
1268 XFS_MOUNT_ILOCK(mp);
1269 mount_locked = B_TRUE;
1271 if (ip != ipointer->ip_mprev) {
1272 IPOINTER_REMOVE(ip, mp);
1274 ASSERT(!vnode_refed);
1275 ASSERT(!(lock_flags &
1276 XFS_IOLOCK_SHARED));
1280 ASSERT(ip->i_mount == mp);
1282 if (xfs_ilock_nowait(ip,
1283 XFS_ILOCK_SHARED) == 0) {
1284 ASSERT(ip->i_mount == mp);
1286 * We failed to reacquire
1287 * the inode lock without
1288 * sleeping, so just skip
1289 * the inode for now. We
1290 * clear the ILOCK bit from
1291 * the lock_flags so that we
1292 * won't try to drop a lock
1293 * we don't hold below.
1295 lock_flags &= ~XFS_ILOCK_SHARED;
1296 IPOINTER_REMOVE(ip_next, mp);
1297 } else if ((xfs_ipincount(ip) == 0) &&
1298 xfs_iflock_nowait(ip)) {
1299 ASSERT(ip->i_mount == mp);
1301 * Since this is vfs_sync()
1302 * calling we only flush the
1303 * inode out if we can lock
1304 * it without sleeping and
1305 * it is not pinned. Drop
1306 * the mount lock here so
1307 * that we don't hold it for
1308 * too long. We already have
1309 * a marker in the list here.
1311 XFS_MOUNT_IUNLOCK(mp);
1312 mount_locked = B_FALSE;
1313 error = xfs_iflush(ip,
1316 ASSERT(ip->i_mount == mp);
1317 IPOINTER_REMOVE(ip_next, mp);
1324 if ((flags & SYNC_ATTR) &&
1325 ((ip->i_update_core) ||
1326 ((ip->i_itemp != NULL) &&
1327 (ip->i_itemp->ili_format.ilf_fields != 0)))) {
1329 IPOINTER_INSERT(ip, mp);
1332 if (flags & SYNC_WAIT) {
1334 error = xfs_iflush(ip,
1338 * If we can't acquire the flush
1339 * lock, then the inode is already
1340 * being flushed so don't bother
1341 * waiting. If we can lock it then
1342 * do a delwri flush so we can
1343 * combine multiple inode flushes
1344 * in each disk write.
1346 if (xfs_iflock_nowait(ip)) {
1347 error = xfs_iflush(ip,
1356 if (lock_flags != 0) {
1357 xfs_iunlock(ip, lock_flags);
1362 * If we had to take a reference on the vnode
1363 * above, then wait until after we've unlocked
1364 * the inode to release the reference. This is
1365 * because we can be already holding the inode
1366 * lock when VN_RELE() calls xfs_inactive().
1368 * Make sure to drop the mount lock before calling
1369 * VN_RELE() so that we don't trip over ourselves if
1370 * we have to go for the mount lock again in the
1374 IPOINTER_INSERT(ip, mp);
1379 vnode_refed = B_FALSE;
1387 * bail out if the filesystem is corrupted.
1389 if (error == EFSCORRUPTED) {
1390 if (!mount_locked) {
1391 XFS_MOUNT_ILOCK(mp);
1392 IPOINTER_REMOVE(ip, mp);
1394 XFS_MOUNT_IUNLOCK(mp);
1395 ASSERT(ipointer_in == B_FALSE);
1396 kmem_free(ipointer, sizeof(xfs_iptr_t));
1397 return XFS_ERROR(error);
1400 /* Let other threads have a chance at the mount lock
1401 * if we have looped many times without dropping the
1404 if ((++preempt & XFS_PREEMPT_MASK) == 0) {
1406 IPOINTER_INSERT(ip, mp);
1410 if (mount_locked == B_FALSE) {
1411 XFS_MOUNT_ILOCK(mp);
1412 mount_locked = B_TRUE;
1413 IPOINTER_REMOVE(ip, mp);
1417 ASSERT(ipointer_in == B_FALSE);
1420 } while (ip != mp->m_inodes);
1422 XFS_MOUNT_IUNLOCK(mp);
1424 ASSERT(ipointer_in == B_FALSE);
1426 kmem_free(ipointer, sizeof(xfs_iptr_t));
1427 return XFS_ERROR(last_error);
1431 * xfs sync routine for internal use
1433 * This routine supports all of the flags defined for the generic VFS_SYNC
1434 * interface as explained above under xfs_sync. In the interests of not
1435 * changing interfaces within the 6.5 family, additional internally-
1436 * required functions are specified within a separate xflags parameter,
1437 * only available by calling this routine.
1449 uint log_flags = XFS_LOG_FORCE;
1451 xfs_buf_log_item_t *bip;
1454 * Sync out the log. This ensures that the log is periodically
1455 * flushed even if there is not enough activity to fill it up.
1457 if (flags & SYNC_WAIT)
1458 log_flags |= XFS_LOG_SYNC;
1460 xfs_log_force(mp, (xfs_lsn_t)0, log_flags);
1462 if (flags & (SYNC_ATTR|SYNC_DELWRI)) {
1463 if (flags & SYNC_BDFLUSH)
1464 xfs_finish_reclaim_all(mp, 1);
1466 error = xfs_sync_inodes(mp, flags, xflags, bypassed);
1470 * Flushing out dirty data above probably generated more
1471 * log activity, so if this isn't vfs_sync() then flush
1474 if (flags & SYNC_DELWRI) {
1475 xfs_log_force(mp, (xfs_lsn_t)0, log_flags);
1478 if (flags & SYNC_FSDATA) {
1480 * If this is vfs_sync() then only sync the superblock
1481 * if we can lock it without sleeping and it is not pinned.
1483 if (flags & SYNC_BDFLUSH) {
1484 bp = xfs_getsb(mp, XFS_BUF_TRYLOCK);
1486 bip = XFS_BUF_FSPRIVATE(bp,xfs_buf_log_item_t*);
1487 if ((bip != NULL) &&
1488 xfs_buf_item_dirty(bip)) {
1489 if (!(XFS_BUF_ISPINNED(bp))) {
1491 error = xfs_bwrite(mp, bp);
1500 bp = xfs_getsb(mp, 0);
1502 * If the buffer is pinned then push on the log so
1503 * we won't get stuck waiting in the write for
1504 * someone, maybe ourselves, to flush the log.
1505 * Even though we just pushed the log above, we
1506 * did not have the superblock buffer locked at
1507 * that point so it can become pinned in between
1510 if (XFS_BUF_ISPINNED(bp))
1511 xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE);
1512 if (flags & SYNC_WAIT)
1513 XFS_BUF_UNASYNC(bp);
1516 error = xfs_bwrite(mp, bp);
1524 * If this is the periodic sync, then kick some entries out of
1525 * the reference cache. This ensures that idle entries are
1526 * eventually kicked out of the cache.
1528 if (flags & SYNC_REFCACHE) {
1529 if (flags & SYNC_WAIT)
1530 xfs_refcache_purge_mp(mp);
1532 xfs_refcache_purge_some(mp);
1536 * Now check to see if the log needs a "dummy" transaction.
1539 if (!(flags & SYNC_REMOUNT) && xfs_log_need_covered(mp)) {
1544 * Put a dummy transaction in the log to tell
1545 * recovery that all others are OK.
1547 tp = xfs_trans_alloc(mp, XFS_TRANS_DUMMY1);
1548 if ((error = xfs_trans_reserve(tp, 0,
1549 XFS_ICHANGE_LOG_RES(mp),
1551 xfs_trans_cancel(tp, 0);
1556 xfs_ilock(ip, XFS_ILOCK_EXCL);
1558 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
1559 xfs_trans_ihold(tp, ip);
1560 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
1561 error = xfs_trans_commit(tp, 0, NULL);
1562 xfs_iunlock(ip, XFS_ILOCK_EXCL);
1563 xfs_log_force(mp, (xfs_lsn_t)0, log_flags);
1567 * When shutting down, we need to insure that the AIL is pushed
1568 * to disk or the filesystem can appear corrupt from the PROM.
1570 if ((flags & (SYNC_CLOSE|SYNC_WAIT)) == (SYNC_CLOSE|SYNC_WAIT)) {
1571 XFS_bflush(mp->m_ddev_targp);
1572 if (mp->m_rtdev_targp) {
1573 XFS_bflush(mp->m_rtdev_targp);
1577 return XFS_ERROR(last_error);
1581 * xfs_vget - called by DMAPI and NFSD to get vnode from file handle
1589 xfs_mount_t *mp = XFS_BHVTOM(bdp);
1590 xfs_fid_t *xfid = (struct xfs_fid *)fidp;
1597 * Invalid. Since handles can be created in user space and passed in
1598 * via gethandle(), this is not cause for a panic.
1600 if (xfid->xfs_fid_len != sizeof(*xfid) - sizeof(xfid->xfs_fid_len))
1601 return XFS_ERROR(EINVAL);
1603 ino = xfid->xfs_fid_ino;
1604 igen = xfid->xfs_fid_gen;
1607 * NFS can sometimes send requests for ino 0. Fail them gracefully.
1610 return XFS_ERROR(ESTALE);
1612 error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0);
1620 return XFS_ERROR(EIO);
1623 if (ip->i_d.di_mode == 0 || ip->i_d.di_gen != igen) {
1624 xfs_iput_new(ip, XFS_ILOCK_SHARED);
1626 return XFS_ERROR(ENOENT);
1629 *vpp = XFS_ITOV(ip);
1630 xfs_iunlock(ip, XFS_ILOCK_SHARED);
1635 #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */
1636 #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */
1637 #define MNTOPT_LOGDEV "logdev" /* log device */
1638 #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */
1639 #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */
1640 #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */
1641 #define MNTOPT_INO64 "ino64" /* force inodes into 64-bit range */
1642 #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */
1643 #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */
1644 #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */
1645 #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */
1646 #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */
1647 #define MNTOPT_MTPT "mtpt" /* filesystem mount point */
1648 #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */
1649 #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */
1650 #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */
1651 #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */
1652 #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */
1653 #define MNTOPT_IHASHSIZE "ihashsize" /* size of inode hash table */
1654 #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */
1655 #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and
1656 * unwritten extent conversion */
1657 #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */
1658 #define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */
1659 #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */
1660 #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */
1661 #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */
1662 #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */
1663 #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes
1665 #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */
1666 #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */
1668 STATIC unsigned long
1669 suffix_strtoul(const char *cp, char **endp, unsigned int base)
1671 int last, shift_left_factor = 0;
1672 char *value = (char *)cp;
1674 last = strlen(value) - 1;
1675 if (value[last] == 'K' || value[last] == 'k') {
1676 shift_left_factor = 10;
1679 if (value[last] == 'M' || value[last] == 'm') {
1680 shift_left_factor = 20;
1683 if (value[last] == 'G' || value[last] == 'g') {
1684 shift_left_factor = 30;
1688 return simple_strtoul(cp, endp, base) << shift_left_factor;
1693 struct bhv_desc *bhv,
1695 struct xfs_mount_args *args,
1698 struct vfs *vfsp = bhvtovfs(bhv);
1699 char *this_char, *value, *eov;
1700 int dsunit, dswidth, vol_dsunit, vol_dswidth;
1703 args->flags2 |= XFSMNT2_COMPAT_IOSIZE;
1704 args->flags |= XFSMNT_IDELETE;
1709 iosize = dsunit = dswidth = vol_dsunit = vol_dswidth = 0;
1711 while ((this_char = strsep(&options, ",")) != NULL) {
1714 if ((value = strchr(this_char, '=')) != NULL)
1717 if (!strcmp(this_char, MNTOPT_LOGBUFS)) {
1718 if (!value || !*value) {
1719 printk("XFS: %s option requires an argument\n",
1723 args->logbufs = simple_strtoul(value, &eov, 10);
1724 } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) {
1725 if (!value || !*value) {
1726 printk("XFS: %s option requires an argument\n",
1730 args->logbufsize = suffix_strtoul(value, &eov, 10);
1731 } else if (!strcmp(this_char, MNTOPT_LOGDEV)) {
1732 if (!value || !*value) {
1733 printk("XFS: %s option requires an argument\n",
1737 strncpy(args->logname, value, MAXNAMELEN);
1738 } else if (!strcmp(this_char, MNTOPT_MTPT)) {
1739 if (!value || !*value) {
1740 printk("XFS: %s option requires an argument\n",
1744 strncpy(args->mtpt, value, MAXNAMELEN);
1745 } else if (!strcmp(this_char, MNTOPT_RTDEV)) {
1746 if (!value || !*value) {
1747 printk("XFS: %s option requires an argument\n",
1751 strncpy(args->rtname, value, MAXNAMELEN);
1752 } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) {
1753 if (!value || !*value) {
1754 printk("XFS: %s option requires an argument\n",
1758 iosize = simple_strtoul(value, &eov, 10);
1759 args->flags |= XFSMNT_IOSIZE;
1760 args->iosizelog = (uint8_t) iosize;
1761 } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) {
1762 if (!value || !*value) {
1763 printk("XFS: %s option requires an argument\n",
1767 iosize = suffix_strtoul(value, &eov, 10);
1768 args->flags |= XFSMNT_IOSIZE;
1769 args->iosizelog = ffs(iosize) - 1;
1770 } else if (!strcmp(this_char, MNTOPT_IHASHSIZE)) {
1771 if (!value || !*value) {
1772 printk("XFS: %s option requires an argument\n",
1776 args->flags |= XFSMNT_IHASHSIZE;
1777 args->ihashsize = simple_strtoul(value, &eov, 10);
1778 } else if (!strcmp(this_char, MNTOPT_GRPID) ||
1779 !strcmp(this_char, MNTOPT_BSDGROUPS)) {
1780 vfsp->vfs_flag |= VFS_GRPID;
1781 } else if (!strcmp(this_char, MNTOPT_NOGRPID) ||
1782 !strcmp(this_char, MNTOPT_SYSVGROUPS)) {
1783 vfsp->vfs_flag &= ~VFS_GRPID;
1784 } else if (!strcmp(this_char, MNTOPT_WSYNC)) {
1785 args->flags |= XFSMNT_WSYNC;
1786 } else if (!strcmp(this_char, MNTOPT_OSYNCISOSYNC)) {
1787 args->flags |= XFSMNT_OSYNCISOSYNC;
1788 } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) {
1789 args->flags |= XFSMNT_NORECOVERY;
1790 } else if (!strcmp(this_char, MNTOPT_INO64)) {
1791 args->flags |= XFSMNT_INO64;
1793 printk("XFS: %s option not allowed on this system\n",
1797 } else if (!strcmp(this_char, MNTOPT_NOALIGN)) {
1798 args->flags |= XFSMNT_NOALIGN;
1799 } else if (!strcmp(this_char, MNTOPT_SWALLOC)) {
1800 args->flags |= XFSMNT_SWALLOC;
1801 } else if (!strcmp(this_char, MNTOPT_SUNIT)) {
1802 if (!value || !*value) {
1803 printk("XFS: %s option requires an argument\n",
1807 dsunit = simple_strtoul(value, &eov, 10);
1808 } else if (!strcmp(this_char, MNTOPT_SWIDTH)) {
1809 if (!value || !*value) {
1810 printk("XFS: %s option requires an argument\n",
1814 dswidth = simple_strtoul(value, &eov, 10);
1815 } else if (!strcmp(this_char, MNTOPT_64BITINODE)) {
1816 args->flags &= ~XFSMNT_32BITINODES;
1818 printk("XFS: %s option not allowed on this system\n",
1822 } else if (!strcmp(this_char, MNTOPT_NOUUID)) {
1823 args->flags |= XFSMNT_NOUUID;
1824 } else if (!strcmp(this_char, MNTOPT_BARRIER)) {
1825 args->flags |= XFSMNT_BARRIER;
1826 } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) {
1827 args->flags &= ~XFSMNT_BARRIER;
1828 } else if (!strcmp(this_char, MNTOPT_IKEEP)) {
1829 args->flags &= ~XFSMNT_IDELETE;
1830 } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) {
1831 args->flags |= XFSMNT_IDELETE;
1832 } else if (!strcmp(this_char, MNTOPT_LARGEIO)) {
1833 args->flags2 &= ~XFSMNT2_COMPAT_IOSIZE;
1834 } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) {
1835 args->flags2 |= XFSMNT2_COMPAT_IOSIZE;
1836 } else if (!strcmp(this_char, MNTOPT_ATTR2)) {
1837 args->flags |= XFSMNT_ATTR2;
1838 } else if (!strcmp(this_char, MNTOPT_NOATTR2)) {
1839 args->flags &= ~XFSMNT_ATTR2;
1840 } else if (!strcmp(this_char, "osyncisdsync")) {
1841 /* no-op, this is now the default */
1842 printk("XFS: osyncisdsync is now the default, option is deprecated.\n");
1843 } else if (!strcmp(this_char, "irixsgid")) {
1844 printk("XFS: irixsgid is now a sysctl(2) variable, option is deprecated.\n");
1846 printk("XFS: unknown mount option [%s].\n", this_char);
1851 if (args->flags & XFSMNT_NORECOVERY) {
1852 if ((vfsp->vfs_flag & VFS_RDONLY) == 0) {
1853 printk("XFS: no-recovery mounts must be read-only.\n");
1858 if ((args->flags & XFSMNT_NOALIGN) && (dsunit || dswidth)) {
1860 "XFS: sunit and swidth options incompatible with the noalign option\n");
1864 if ((dsunit && !dswidth) || (!dsunit && dswidth)) {
1865 printk("XFS: sunit and swidth must be specified together\n");
1869 if (dsunit && (dswidth % dsunit != 0)) {
1871 "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)\n",
1876 if ((args->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) {
1878 args->sunit = dsunit;
1879 args->flags |= XFSMNT_RETERR;
1881 args->sunit = vol_dsunit;
1883 dswidth ? (args->swidth = dswidth) :
1884 (args->swidth = vol_dswidth);
1886 args->sunit = args->swidth = 0;
1890 if (args->flags & XFSMNT_32BITINODES)
1891 vfsp->vfs_flag |= VFS_32BITINODES;
1893 args->flags |= XFSMNT_FLAGS2;
1899 struct bhv_desc *bhv,
1902 static struct proc_xfs_info {
1906 /* the few simple ones we can get from the mount struct */
1907 { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC },
1908 { XFS_MOUNT_INO64, "," MNTOPT_INO64 },
1909 { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN },
1910 { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC },
1911 { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID },
1912 { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY },
1913 { XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC },
1916 struct proc_xfs_info *xfs_infop;
1917 struct xfs_mount *mp = XFS_BHVTOM(bhv);
1918 struct vfs *vfsp = XFS_MTOVFS(mp);
1920 for (xfs_infop = xfs_info; xfs_infop->flag; xfs_infop++) {
1921 if (mp->m_flags & xfs_infop->flag)
1922 seq_puts(m, xfs_infop->str);
1925 if (mp->m_flags & XFS_MOUNT_IHASHSIZE)
1926 seq_printf(m, "," MNTOPT_IHASHSIZE "=%d", mp->m_ihsize);
1928 if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE)
1929 seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk",
1930 (int)(1 << mp->m_writeio_log) >> 10);
1932 if (mp->m_logbufs > 0)
1933 seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs);
1934 if (mp->m_logbsize > 0)
1935 seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10);
1938 seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname);
1940 seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname);
1942 if (mp->m_dalign > 0)
1943 seq_printf(m, "," MNTOPT_SUNIT "=%d",
1944 (int)XFS_FSB_TO_BB(mp, mp->m_dalign));
1945 if (mp->m_swidth > 0)
1946 seq_printf(m, "," MNTOPT_SWIDTH "=%d",
1947 (int)XFS_FSB_TO_BB(mp, mp->m_swidth));
1949 if (!(mp->m_flags & XFS_MOUNT_IDELETE))
1950 seq_printf(m, "," MNTOPT_IKEEP);
1951 if (!(mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE))
1952 seq_printf(m, "," MNTOPT_LARGEIO);
1953 if (mp->m_flags & XFS_MOUNT_BARRIER)
1954 seq_printf(m, "," MNTOPT_BARRIER);
1956 if (!(vfsp->vfs_flag & VFS_32BITINODES))
1957 seq_printf(m, "," MNTOPT_64BITINODE);
1958 if (vfsp->vfs_flag & VFS_GRPID)
1959 seq_printf(m, "," MNTOPT_GRPID);
1968 xfs_mount_t *mp = XFS_BHVTOM(bdp);
1970 while (atomic_read(&mp->m_active_trans) > 0)
1973 /* Push the superblock and write an unmount record */
1974 xfs_log_unmount_write(mp);
1975 xfs_unmountfs_writesb(mp);
1976 xfs_fs_log_dummy(mp);
1980 vfsops_t xfs_vfsops = {
1981 BHV_IDENTITY_INIT(VFS_BHV_XFS,VFS_POSITION_XFS),
1982 .vfs_parseargs = xfs_parseargs,
1983 .vfs_showargs = xfs_showargs,
1984 .vfs_mount = xfs_mount,
1985 .vfs_unmount = xfs_unmount,
1986 .vfs_mntupdate = xfs_mntupdate,
1987 .vfs_root = xfs_root,
1988 .vfs_statvfs = xfs_statvfs,
1989 .vfs_sync = xfs_sync,
1990 .vfs_vget = xfs_vget,
1991 .vfs_dmapiops = (vfs_dmapiops_t)fs_nosys,
1992 .vfs_quotactl = (vfs_quotactl_t)fs_nosys,
1993 .vfs_init_vnode = xfs_initialize_vnode,
1994 .vfs_force_shutdown = xfs_do_force_shutdown,
1995 .vfs_freeze = xfs_freeze,